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Text File  |  1993-03-14  |  291b  |  11 lines
  1.                                         (* Chapter 13 - Program 3 *)
  2. DEFINITION MODULE Circles;
  3.  
  4. EXPORT QUALIFIED AreaOfCircle, PerimeterOfCircle;
  5.  
  6. PROCEDURE AreaOfCircle(Radius : REAL; VAR Area : REAL);
  7.  
  8. PROCEDURE PerimeterOfCircle(Radius : REAL; VAR Perim : REAL);
  9.  
  10. END Circles.
  11.